Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
권호 표지

The Heterogeneous Reaction of Calcinated Alunite Powder with Ammonium Buffer Solution

蝦燒 Alunite 粉末과 암모늄鹽 緩衝溶液과의 不均一反應

  • Hee Chul Lee (Department of Chemical Engineering, College of Engineering, Inha University) ;
  • Chul Young Kim (Department of Chemical Engineering, College of Engineering, Inha University) ;
  • Ikchoon Lee (Department of Chemical Engineering, College of Engineering, Inha University)
  • 이희철 (仁荷大學校 工科大學 化學工學科) ;
  • 김철영 (仁荷大學校 工科大學 化學工學科) ;
  • 이익춘 (仁荷大學校 工科大學 化學工學科)
  • Published : 1975.10.30
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Abstract

Calcinated alunite powder (surface area 5100 $cm^2/g$) was found to react with well stirred ammonium buffer solution (pH 8.0) following Jander's equation. The rate constants increase with the amount of solid and temperature of reaction system. The energy of activation for the reactions (at $30{\sim}60^{\circ}C$) was 15.7 kcal/mole. The rate-determining step appears to involve ionization of alunite.

Alunite 鑛으로 부터 칼륨과 알루미늄 成分을 完全히 分離하여 내는 方法으로 pH8.0인 緩衝溶液과의 反應에서 反應速度와 反應機構를 究明했다.

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References

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